There are 2 ways you can help us:
Join our team
This implies you should participate in team activities like status meetings, planning and retrospective. You should be ready to spend 10+ hours per week. You can find more information on this page. Drop us a mail on project[at]jtalks.org with a brief info about yourself.
Send Pull Request
Here is a list of issues you're welcome to send a Pull Request for. In this list we tried to gather tasks that are most probably pretty local and require a small number of files to be changed. It doesn't always mean that the task is easy, it just means it's easy for us to review your change.
Feel free to choose this type of contribution if you don't want to commit yourself to team work, but still want to help.
The page has moved to GitHub.